From d93cdc27505f86633d3a947fb48a6bcb92d790d0 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 15 Oct 2018 02:07:16 -0300
Subject: gl_shader_decompiler: Implement HADD2_IMM and HMUL2_IMM

---
 src/video_core/engines/shader_bytecode.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'src/video_core/engines')

diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h
index f84b9883c..3fbdd20b8 100644
--- a/src/video_core/engines/shader_bytecode.h
+++ b/src/video_core/engines/shader_bytecode.h
@@ -589,6 +589,31 @@ union Instruction {
         BitField<35, 2, HalfType> type_c;
     } alu_half;
 
+    union {
+        BitField<39, 2, HalfPrecision> precision;
+        BitField<39, 1, u64> ftz;
+        BitField<52, 1, u64> saturate;
+        BitField<49, 2, HalfMerge> merge;
+
+        BitField<43, 1, u64> negate_a;
+        BitField<44, 1, u64> abs_a;
+        BitField<47, 2, HalfType> type_a;
+    } alu_half_imm;
+
+    union {
+        BitField<29, 1, u64> first_negate;
+        BitField<20, 9, u64> first;
+
+        BitField<56, 1, u64> second_negate;
+        BitField<30, 9, u64> second;
+
+        u32 PackImmediates() const {
+            // Immediates are half floats shifted.
+            constexpr u32 imm_shift = 6;
+            return static_cast<u32>((first << imm_shift) | (second << (16 + imm_shift)));
+        }
+    } half_imm;
+
     union {
         BitField<40, 1, u64> invert;
     } popc;
@@ -1183,8 +1208,10 @@ public:
         LEA_HI,
         HADD2_C,
         HADD2_R,
+        HADD2_IMM,
         HMUL2_C,
         HMUL2_R,
+        HMUL2_IMM,
         POPC_C,
         POPC_R,
         POPC_IMM,
@@ -1259,6 +1286,7 @@ public:
         ArithmeticInteger,
         ArithmeticIntegerImmediate,
         ArithmeticHalf,
+        ArithmeticHalfImmediate,
         Bfe,
         Shift,
         Ffma,
@@ -1432,8 +1460,10 @@ private:
             INST("00011000--------", Id::LEA_HI, Type::ArithmeticInteger, "LEA_HI"),
             INST("0111101-1-------", Id::HADD2_C, Type::ArithmeticHalf, "HADD2_C"),
             INST("0101110100010---", Id::HADD2_R, Type::ArithmeticHalf, "HADD2_R"),
+            INST("0111101-0-------", Id::HADD2_IMM, Type::ArithmeticHalfImmediate, "HADD2_IMM"),
             INST("0111100-1-------", Id::HMUL2_C, Type::ArithmeticHalf, "HMUL2_C"),
             INST("0101110100001---", Id::HMUL2_R, Type::ArithmeticHalf, "HMUL2_R"),
+            INST("0111100-0-------", Id::HMUL2_IMM, Type::ArithmeticHalfImmediate, "HMUL2_IMM"),
             INST("0101000010000---", Id::MUFU, Type::Arithmetic, "MUFU"),
             INST("0100110010010---", Id::RRO_C, Type::Arithmetic, "RRO_C"),
             INST("0101110010010---", Id::RRO_R, Type::Arithmetic, "RRO_R"),
-- 
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